Really love my XP Professional x64. Poser 6, Carrara 5 Pro, Cinema 4D and other programs run very smooth. Also no problems with Wacom tablets. I'm only missing a DVD-RAM packet driver and a driver for the printer port on my DSL router (NETGEAR).

Plan to keep myself away from Vista as long as possible.

By the way: the missing OpenGL support with Vista could be responsible for some trouble...